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Equity Compensation Plans (Tables) | 12 Months Ended
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Dec. 31, 2020
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] |
Summary of Unvested Restricted Common Stock Activity | A summary of our unvested restricted stock activity during 2020 is as follows (shares in thousands):
|  | 2020 |
|  | Shares |  |  | Weighted- Average Grant Date Fair Value |
Unvested awards, beginning |  |  | 1,117 |  |  | $ | 42.60 |
Awards granted |  |  | 695 |  |  |  | 40.86 |
Awards forfeited/cancelled |  |  | (64 | ) |  |  | 40.53 |
Awards vested |  |  | (707 | ) |  |  | 43.15 |
Unvested awards, ending |  |  | 1,041 |  |  | $ | 41.31 |

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- Definition Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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